#!/bin/bash
set -e
source variable.sh
imagerepo=$IMAGE_REPO/base-`arch`
#imagerepo=docker.ctyun.cn:60001/base-`arch`
podnetwork=10.244.0.0/16
usedocker=1
ip=$(hostname -I | awk '{print $1}')
name=$(hostname)

help() {
    echo "Usage:"
    echo "Install: $0 <-i ONLYINSTALL>"
    echo "Setup: $0 <-d DIST> <-n NODETYPE> <-t CONTAINERTYPE>"
    echo "Other options: $0 [-c] [-h]"
    echo "Description:"
    echo "without -i will install and setup current node with -d -n and -t"
    echo "-c reset and clean current node"
    echo "-h print help message"
    echo "-i ONLYINSTALL package docker or k8s, without any config"
    echo "-d DIST, ctl2 or ctl3"
    echo "-n NODETYPE, master or worker"
    echo "-t CONTAINERTYPE, docker or containerd"
    exit -1
}

install_package() {
    local package=$1
    local version_key=$(echo "${package^^}" | tr '-' '_')_VERSION
    local version=${!version_key}

    if [[ -z "$version" ]]; then
        echo "版本未定义或为空: $version_key"
        return 1
    fi

    echo "执行: yum install -y ${package}-${version}"
    yum install -y "${package}-${version}"
}

[[ $# == 0 ]] && help && exit
while getopts 'i:d:n:t:b:uch' OPT; do
    case $OPT in
        i) if [ "$OPTARG" == "docker" ] || [ "$OPTARG" == "k8s" ];then
               onlyinstall=$OPTARG && echo "only install $OPTARG..."
           else
               echo "unsupport onlyinstall value $OPTARG..." && exit
           fi
        ;;
        d) if [ "$OPTARG" == "ctl2" ] || [ "$OPTARG" == "ctl3" ];then
               if [[ "$OPTARG" == "ctl2" && `rpm --eval %{dist}` == ".ctl3" ]] || [[ "$OPTARG" == "ctl3" && `rpm --eval %{dist}` == ".ctl2" ]];then
                   echo "$OPTARG is not suitable for current distrubution" && exit
               else
                   dist=$OPTARG && echo "dist is set as $OPTARG..."
               fi
           else
               echo "unsupport dist type $OPTARG..." && exit
           fi
        ;;
        n) if [ "$OPTARG" == "master" ] || [ "$OPTARG" == "worker" ];then
               nodetype=$OPTARG && echo "nodetype is set as $OPTARG..."
           else
               echo "unsupport node type $OPTARG..." && exit
           fi
        ;;
        t) if [ "$OPTARG" == "docker" ];then
               usedocker=1 && echo "usedocker is set as 1..."
           elif [ "$OPTARG" == "containerd" ];then
               usedocker=0 && echo "usedocker is set as 0..."
           else
               echo "unsupport container engine type $OPTARG..." && exit
           fi
        ;;
        u) for package in $online_install_pkg; do 
            if rpm -q "$package" > /dev/null 2>&1; then 
                yum update -y "$package" --obsoletes
            else 
                echo "Package $package is not installed, skipping update."
            fi
           done
           exit 0
           ;;
        b)
           pkg_version=$OPTARG
            if [ "$pkg_version" = "120" ]; then 
                set_version_120
            elif [ "$pkg_version" = "125" ]; then
                set_version_125
            elif [ "$pkg_version" = "129" ]; then
                set_version_129
            else 
                echo "Invalid version specified!"
                exit 1 
            fi
           ;;
        c) echo "clean k8s setup..."
           kubeadm reset -f
           rm -rf /etc/cni/*
           ifconfig cni0 down > /dev/null 2>&1
           ifconfig flannel.1 down > /dev/null 2>&1
           ifconfig docker0 down > /dev/null 2>&1
           ip link delete cni0 > /dev/null 2>&1
           ip link delete flannel.1 > /dev/null 2>&1
           echo "k8s reset and network all deleted!" && exit
        ;;
        h) help && exit;;
        ?) help && exit;;
    esac
done

echo "开始一键安装模式，该过程需要使用root"
[ `whoami` == "root" ] || exit
echo -e "\033[44;37m 安装基础库 \033[0m"
yum makecache || (echo "无法连接yum源，请将所有依赖rpm手动安装" && exit 1)
install_package criu
install_package libcgroup

grep docker.ctyun.cn /etc/hosts || echo "124.236.120.248 docker.ctyun.cn" >> /etc/hosts
echo -e "\033[44;37m 安装 runc/containerd/docker \033[0m"
install_package runc
install_package containerd
if [ $usedocker == 1 ];then
    if which docker > /dev/null 2>&1; then
        [ $(rpm -q $(rpm -qf $(which docker)) --qf %{version} | awk -F '.' '{print $1}') -le 18 ] && \
        (rpm -e runc --nodeps; yum install -y runc-1.1.3-23;)
    else
        install_package docker-cli
        install_package docker
    fi

    if [ ! -f /etc/docker/daemon.json ];then
        cp /etc/k8s-install/daemon.json /etc/docker/daemon.json
    fi
    sleep 15
    systemctl enable docker
    systemctl daemon-reload
    systemctl restart docker
    imagecmd="docker pull $imagerepo"
else
    imagecmd="ctr i pull --plain-http $imagerepo"
    sockoption="--cri-socket /run/cri-containerd/cri-containerd.sock"
    sedcmd='-e "s,dockershim.sock,containerd/containerd.sock,g"'
fi
if [ "x$onlyinstall" == "xdocker" ];then
    echo "Docker 安装完成. Exit" && exit
fi

echo -e "\033[44;37m 安装 k8s rpms \033[0m"
if [ "$nodetype" == "worker" ];then
    install_package kubernetes-kubelet
    install_package kubernetes-client
    install_package kubernetes-node
    install_package kubernetes-kubeadm
elif [ "$nodetype" == "master" ];then
    install_package kubernetes-client
    install_package kubernetes-kubeadm
    install_package kubernetes-master
    install_package kubernetes-kubelet
    install_package kubernetes-node
    #cp /etc/k8s-install/kubeadm-template.yaml kubeadm.yaml
else
    echo "Please specify the 'nodetype' correctly through the '-n' option." && exit
fi
systemctl enable kubelet

if [ ! -d /opt/cni ];then
    echo -e "\033[44;37m 安装k8s cni插件 \033[0m"
    install_package containernetworking-plugins
    mkdir -p /opt/cni
    ln -s /usr/libexec/cni /opt/cni/bin
fi
if [ "x$onlyinstall" == "xk8s" ];then
    echo "K8s 安装完成. Exit" && exit
fi

if [ ! -f /etc/kubernetes/admin.conf ];then
    echo -e "\033[44;37m 设置k8s \033[0m"
    iptables -P FORWARD ACCEPT
    systemctl stop firewalld.service
    systemctl disable firewalld.service
    sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
    swapoff -a
    grep ^nameserver /etc/resolv.conf || (chmod a+w /etc/resolv.conf && echo "nameserver 114.114.114.114" >> /etc/resolv.conf)
    #可根据版本需要编辑修改各镜像版本
    for image_name in "${!images[@]}"; do
        version_var="${images[$image_name]}"
        version="${!version_var}"
        ${imagecmd}/${image_name}:${version}
    done
    
    if [ "$nodetype" == "master" ];then
        kubeadm init $sockoption --image-repository=$imagerepo --pod-network-cidr=$podnetwork --apiserver-advertise-address=$ip --kubernetes-version=v1.20.2
        #默认使用参数配置（因为可做到无人工修改），也可以解注如下代码并手工修改kubeadm-template.yaml，通过config方式完成init。
        #cp /etc/k8s-install/kubeadm-template.yaml kubeadm.yaml
        #sed -i -e "s/advertiseAddress: ip/advertiseAddress: $ip/g" -e "s/name: master/name: $name/g" -e "s/ARCH/`arch`/g" $sedcmd kubeadm.yaml
        #kubeadm init --config kubeadm.yaml
        mkdir -p $HOME/.kube
        cp /etc/kubernetes/admin.conf $HOME/.kube/config
        cp /etc/kubernetes/admin.conf ~/.kube/config
        chown $(id -u):$(id -g) $HOME/.kube/config
        sed "s/ARCH/`arch`/g" /etc/k8s-install/flannel.yaml | kubectl apply -f -
        sleep 5
        echo -e "\033[44;37m 去除k8s污点 \033[0m"
        master_name=$(kubectl get node | grep master | awk '{print $1}')
        master_taint=$(kubectl describe node $master_name | grep Taints | awk '{print $2}') 
        if [[ $master_taint = "<none>" ]];then
            echo "不存在污点！"
        else
            kubectl taint node $master_name $master_taint-
            kubectl taint node $master_name node.kubernetes.io/not-ready-
        fi
        #rm -rf kubeadm.yaml
        echo  -e "\033[44;37m master结点全部部署完成，请拷贝kubeadm join命令行备用 \033[0m"
    elif [ "$nodetype" == "worker" ];then
        echo  -e "\033[44;37m 请运行master配置完成后提示的kubeadm join命令行 \033[0m"
    else
        echo "Please specify the 'nodetype' correctly through the '-n' option." && exit
    fi
fi
